Safety cap

Details Safety cap Safety cap

1988-09-20

1989-11-28

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604263, A61M 532

Patent

active

048834700

ABSTRACT:
A safety cap having radial projections which comprise a slide flank inclined in the peripheral direction relative to the longitudinal axis of the sleeve of the safety cap. The slide flanks are engaged by the longitudinal wings of the cannula hub, which wings fit tightly to the inner wall surface between the radial projections.
Subject to the orientation of the peripherally inclined slide flank of each radial projection, the rotation of the safety cap loosely put together with the cannula hub causes a clamping lock in one direction or the other of the safety cap and the cannula hub by a mutual blocking of the radial projections and the longtiudinal wings, on the one hand, or an axial displacement of the safety cap from the cannula hub on the other hand. By a keying effect of the longitudinal wing of the cannula hub sliding over the oblique slide flank, the adhesion between the longitudinal wings and the inner wall surface is cancelled without a tractive effect endangering the connection of syringe cone and cannula hub, and the cannula is ready for use.

REFERENCES:
patent: 4237882 (1980-12-01), Wickham
patent: 4610667 (1986-09-01), Pedicano et al.
patent: 4740205 (1988-04-01), Seltzer et al.

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